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Discussion Starter · #1 ·
I haven’t done much with my 2.8 duramax yet, but I have experience with the full size duramax. And when tuning those you needed a lift pump. The lift pump was there to keep the fuel rails from being drained/loosing pressure, but also do a lot of other things for the bigger duramax’s. Such as reduce/eliminate air emulsification in the fuel, add better fuel filtration and water separation. Has anyone considered running a lift pump such as a fast or airdog on these little duramax’s ? I know on the 6.6 it greatly extends (basically prevents failure) injector life.

Any thoughts?
 

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Yes. But no I have not heard of anyone using one. Not sure there is a need for one on these trucks. Unless you get bigger injectors, turbo or a really hot tune. The only guys I know with lift pumps are those who use their trucks at a truck pull (but also daily drive). It could help our truck, maybe, but I think it would be more of a luxury than a necessity for us (unless you’re making a bunch of power like I said).
 

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Discussion Starter · #4 ·
I run one on my LML can’t run a hot tune without it. And an airdog setup really prolongs injector life
 

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Well if you run too hot of a tune on these trucks or go with twins, you’ll have other things to worry about upgrading, like rods (or so I’ve been told) so the engine will hold together before you have to worry about getting more fuel to the engine.

Don’t think these little trucks can handle as much added power or stress to the engine and trans as any of the 6.6 engines could. Could add a decent amount of power to those before you needed to worry about engine or trans upgrades.
 

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I haven’t done much with my 2.8 duramax yet, but I have experience with the full size duramax. And when tuning those you needed a lift pump. The lift pump was there to keep the fuel rails from being drained/loosing pressure, but also do a lot of other things for the bigger duramax’s. Such as reduce/eliminate air emulsification in the fuel, add better fuel filtration and water separation. Has anyone considered running a lift pump such as a fast or airdog on these little duramax’s ? I know on the 6.6 it greatly extends (basically prevents failure) injector life.

Any thoughts?
So the 2.8l has the high pressure pump timing belt driven on the block, and an electric lift pump in the fuel tank just like on any gas motor. This pumps fuel to the fuel filter housing which also has a heater inside to help prevent waxing in cold weather. Then it makes its way to the high pressure pump. It is designed similar to the aftermarket filter setups I think you mentioned.
 
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